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Cell Reproduction
Mitosis and Binary Fission
Three Schem
es
Major Events in Mitosis
Vocabulary• Mitosis = division of the cell nucleus
and its contents• Cytokinesis = the division of cell
cytoplasm into two identical daughter cells
• Chromatin = the combination of DNA and histone proteins
• Diploid = Two copies of each chromosome, one paternal, one maternal
Chromosomes
in the Larger Scheme
Chromosome Structure
1 – Chromatid
2 – Centromere
3 – Short arm 4 – Long arm
Telomeres
Do not code for genes Keep ends of
chromosomes from sticking to each other
Prevent loss of genes
The Cell Cycle
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Mitosis in Onion Root Tip
Binary FissionThe primary method
of reproduction for prokaryotes
Does not require a mate
Is asexual reproduction
Does not increase the variation in a population
Binary FissionCentral growth Apical growth
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